Sequential Water Sorption/Desorption of a Nonporous Adaptive Organic Ligand Bridged Coordination Polymer for Atmospheric Moisture Harvesting

Moisture harvesters with favourable attributes such as easy synthetic availability and good processability as alternatives for atmospheric moisture harvesting (AWH) are desirable. This study reports a novel nonporous anionic coordination polymer (CP) of uranyl squarate with methyl viologen (MV 2+ )...

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Published inChemistry : a European journal Vol. 29; no. 54; p. e202301929
Main Authors Meng, Liao, Lan, Jian‐Hui, Huang, Zhi‐Wei, Liu, Yang, Hu, Kong‐Qiu, Yuan, Li‐Yong, Wang, Xin‐Peng, Chai, Zhi‐Fang, Mei, Lei, Shi, Wei‐Qun
Format Journal Article
LanguageEnglish
Published Germany Wiley Subscription Services, Inc 26.09.2023
Subjects
Atmospheric moisture
Chemistry
Coordination polymers
Desorption
Ligands
Methyl viologen
Moisture effects
Polymers
Porous materials
Relative humidity
Sorption
Water vapor
nonporous material
atmospheric water harvesting
sequential water sorption/desorption
organic ligand-bridged coordination polymer
uranyl squarate
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Summary:Moisture harvesters with favourable attributes such as easy synthetic availability and good processability as alternatives for atmospheric moisture harvesting (AWH) are desirable. This study reports a novel nonporous anionic coordination polymer (CP) of uranyl squarate with methyl viologen (MV 2+ ) as charge balancing ions (named U‐Squ‐CP ) which displays intriguing sequential water sorption/desorption behavior as the relative humidity (RH) changes gradually. The evaluation of AWH performance of U‐Squ‐CP shows that it can absorb water vapor under air atmosphere at a low RH of 20 % typical of the levels found in most dry regions of the world, and have good cycling durability, thus demonstrating the capability as a potential moisture harvester for AWH. To the authors’ knowledge, this is the first report on non‐porous organic ligand bridged CP materials for AWH. Moreover, a stepwise water‐filling mechanism for the water sorption/desorption process is deciphered by comprehensive characterizations combining single‐crystal diffraction, which provides a reasonable explanation for the special moisture harvesting behaviour of this non‐porous crystalline material.
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ISSN:0947-6539
1521-3765
1521-3765
DOI:10.1002/chem.202301929